Having looked at the clip I don't recognise the cinema. That said the name over the entrance say's Napier Cinema which could make it Napier Barracks Dortmund. I had a look on the Napier Barracks blogg spot and there were RE there in 1949,23 Field Engineer Regiment ( 2, 5 & 38 fld sqn and 21 fld park sqn) .

The cinema in Hobart Barracks had steps on the right hand side leading up to the blocks and the square. Watched many a midnight movie there

Defiantly Napier Barracks, Dortmund. Although it’s all gone now this is the cinema at 9.68 seconds on the newsreel film. I had the misfortune to spend many a night in that old cinema as it was the 12AD Regt guardroom whilst I was stationed at Dortmund between 1992 & 1994.

The building shown in the link supplied by ron9516 and the one identified as Napier Cinema in the Pathe clip is definitely the same builidng, although it clearly has, 60 years on, fallen on bad times and is now quite derelict...such a shame!

I am not familiar with who Lady Napier was so I googled her (as rude as that sounds!) and see she was affiliated with the house of Scone. She was certainly a patrician looking lady. The Napiers, according to Wikipedia, are an old aristocratic Scottish family connected with Charles II.

Whether that Scots connection was carried over to Napier Barracks, I don't know....